P0802

Transmission Control System MIL Request Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–167 (est.)

Symptoms

MIL warning light does not come on when turning the key
The MIL does not come on when there is a transmission problem
Other transmission fault codes are possible
No warnings about transmission problems

Causes

Wire break in MIL request circuit
Poor contact in TCM connectors
Transmission control module (TCM) malfunction
Wiring harness damage
Short circuit in the circuit

How to Fix

Check MIL circuit fuse
Inspect the wiring harness for damage
Check continuity between TCM and MIL
Test TCM connectors for corrosion and poor contact.
If necessary, replace the transmission control unit

Related codes

P0800 P0801 P0803